DouOS
An AI friend who remembers
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Meet Xiaodou, an AI companion that remembers what matters, keeps your notes, and supports platform models or your own API key.
DouOS is an iOS AI companion app centered on Xiaodou.
Chat with Xiaodou in a warm, lightweight space built for daily thoughts, decisions, notes, and memories. Xiaodou can help you sort through ideas, remember the small things you care about, and keep useful moments close without turning your day into a dashboard.
What you can do:
- Talk with Xiaodou in a focused chat experience
- Save memories, notes, journals, favorites, and personal context
- Use the built-in platform model quota, or configure your own model provider and API key
- Keep your own API keys on-device in iOS Keychain
- Review usage and subscription status from the app
DouOS supports Apple Sign in, platform model access through the DouOS gateway, and bring-your-own-key model configuration for advanced users.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
The developer, 晓晗 宿, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
- Sensitive Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 晓晗 宿
- Size
- 69.8 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- Simplified Chinese
- Age Rating
16+
- 16+
- Contains
Unrestricted Web Access
Messaging and Chat
User-Generated Content
- Copyright
- © 2026 Su Xiaohan